18666704 has 20 divisors (see below), whose sum is σ = 41333664. Its totient is φ = 7999968.

The previous prime is 18666677. The next prime is 18666707. The reversal of 18666704 is 40766681.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18666707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83222 + ... + 83445.

Almost surely, 2^18666704 is an apocalyptic number.

18666704 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18666704 is an abundant number, since it is smaller than the sum of its proper divisors (22666960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18666704 is a wasteful number, since it uses less digits than its factorization.

18666704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166682 (or 166676 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 18666704 is about 4320.4981194302. The cubic root of 18666704 is about 265.2706573733.

The spelling of 18666704 in words is "eighteen million, six hundred sixty-six thousand, seven hundred four".